---
id: CVE-2026-48105
title: 'Arc is an open, SQL-native time-series database for telemetry'
summary: >-
  Arc is an open, SQL-native time-series database for telemetry. Prior to
  version 26.06.1, Arc Enterprise's Raft FSM
  (`internal/cluster/raft/fsm.go:applyRegisterFile`) accepts attacker-chosen
  file paths in manifest-registration proposals w…
severity: high
cvss: 8.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N'
cwe:
  - CWE-22
  - CWE-345
  - CWE-913
vendor: Basekick-Labs
product: arc
affected:
  - arc < 2026.06.1
published: '2026-08-21'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:06:39.057'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-48105'
references:
  - url: >-
      https://github.com/Basekick-Labs/arc/security/advisories/GHSA-f85q-mvg8-qf37
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-24T18:44:53.970430Z'
cvssSource: cna
ingestedAt: '2026-09-14T09:50:15.234Z'
epss: 0.00224
epssPercentile: 0.1168
---

## Overview

Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc Enterprise's Raft FSM (`internal/cluster/raft/fsm.go:applyRegisterFile`) accepts attacker-chosen file paths in manifest-registration proposals without validating them against the configured storage backend. The only check is that the path is non-empty. There is no parent-traversal (`..`) rejection, no allowlist of legitimate prefixes, no scheme restriction (`s3://` vs local), and no length bound. This is fixed in 2026.06.1. Some workarounds are available. Restrict cluster network access to known-trusted peers via strict firewall rules, audit the cluster manifest for unexpected paths (any path not matching the configured storage backend root is suspect), and/or disable cluster mode until the fix is available.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.